The Association of Having a Late Dinner or Bedtime Snack and Skipping Breakfast with Overweight in Japanese Women

Table 1

The characteristics of study participants.

	Proportion or median (interquartile range)
Number	19,687
Age, median	50 (43–60)
40–49 (%)	47.9
50–59 (%)	25.6
60–69 (%)	23.1
70–74 (%)	3.5
Body mass index (kg/m^2)	21.2 (19.6–23.2)
Exercise habit (%)	31.5
Current smoker (%)	7.7
Sleep duration (%)
<5.0 hours	8.7
5.0–5.9 hours	38.9
6.0–6.9 hours	36.8
7.0–7.9 hours	12.6
8.0–8.9 hours	2.4
≥9.0 hours	0.3
Employed (%)	50.2
Having late dinner (%)	11.3
Having bedtime snack (%)	22.2
Skipping breakfast (%)	8.4